The Ledlenser ML4 is the most compact lantern in the Ledlenser range — 97mm tall, 71g with battery and small enough to live on a keyring, clip to a rucksack carabiner or fit in any pocket. Despite its size, it delivers 300 lumens of glare-free Micro Prism illumination, an IP66 water jet resistant rating, a 2-metre drop test, dual power source capability and up to 45 hours of runtime on a single charge. Available in two versions: cool white (3,700K–4,200K) and warm white (2,500K–3,000K) — choose the colour temperature that suits your intended use. The dual power source is the ML4's most practically important feature for outdoor use: the included 14500 Li-ion battery charges via the magnetic contact charging system without needing to be removed from the housing, and a standard AA alkaline battery can be used as a direct drop-in alternative when charging is not available. On a multi-day trip far from power, an AA cell keeps the ML4 operational from any petrol station, supermarket or outdoor retailer worldwide. Available Variants: ML4: Cool White (3,700K–4,200K) — bright, neutral output for task-focused use; camping, outdoor navigation and general illumination ML4 Warm White: Warm White (2,500K–3,000K) — softer, warmer output for ambient and relaxed evening use; CRI 80 for more natural light quality Light Modes: Cool White (ML4): Boost — 300 lumens / 2.5-hour runtime Power — 150 lumens / 8-hour runtime Low power — 5 lumens / 45-hour runtime Blink — signalling mode Red light — Low, Mid and Blink Warm White (ML4 Warm Light): Boost — 300 lumens / 2.2-hour runtime Power — 150 lumens / 7-hour runtime Low power — 5 lumens / 40-hour runtime Blink — signalling mode Red light — Low, Mid and Blink Endless Benefits: Micro Prism Technology — glare-free, efficient illumination across the full 9-LED array for comfortable close-range area lighting. 300 lumens / five white modes plus red light — Boost, Power, Mid Power, Low Power and Blink; red light mode (Low, Mid and Blink) preserves night vision and functions as a safety signal. Dual Power Source — rechargeable 14500 Li-ion battery (magnetic contact charging, 150-minute charge time) or standard AA alkaline as a direct alternative; no modification required. Carabiner snap hook — attach to rucksack, tent loop, belt, strap or keyring; the ML4 is always within reach. Fluorescent elements — on switch and strip visible in the dark; locate the lantern without a secondary light source. Transport lock — prevents accidental activation during storage and carry. IP66 rated and 2-metre drop tested — water jet resistant and impact tested for sustained outdoor use. Up to 45 hours runtime — 5 lumens at low power for extended ambient use; 2.5 hours at full 300-lumen output. Technical Specifications: Maximum output: 300 lumens Battery: 14500 Li-ion / 750mAh / 3.7V (included) / AA alkaline compatible Charge time: 150 minutes via Magnetic Contact Charging System IP rating: IP66 (water jet resistant) Drop tested: 2 metres Operating temperature: -20°C to +40°C Weight (with battery): 71g Length: 97mm / Head diameter: 34.5mm / Tube diameter: 29mm Cool White colour temperature: 3,700K–4,200K Warm White colour temperature: 2,500K–3,000K / CRI 80 Number of LEDs: 9 Inside the Box: 14500 Li-ion rechargeable battery Magnetic contact charging cable
